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![Different types of bench marks theb1555.jpg Different types of bench marks](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1555.jpg?itok=vN4tUNZC)
Description
Different types of bench marks
Collection
Historic Coast & Geodetic Survey
Geodesy
Survey Marks
Keywords
Geodesy
Marks
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